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SE98A Datasheet, PDF (24/43 Pages) NXP Semiconductors – DDR memory module temp sensor, 1.7 V to 3.6 V | |||
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NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
8.6 Temperature register (16-bit read-only)
Table 18. Temperature register bit allocation
Bit
15
14
13
12
11
Symbol ACT
AAW
BAW SIGN
Reset
0
0
0
0
0
Access
R
R
R
R
R
Bit
7
6
5
4
3
Symbol
TEMP[6:0]
Reset
0
0
0
0
0
Access
R
R
R
R
R
10
9
TEMP[10:7]
0
0
R
R
2
1
0
0
R
R
Table 19. Temperature register bit description
Bit
Symbol Description
15
ACT
Above Critical Trip.
Increasing Tamb:
0 â Tamb < Tth(crit)
1 â Tamb ⥠Tth(crit)
Decreasing Tamb:
0 â Tamb < Tth(crit) â Thys
1 â Tamb ⥠Tth(crit) â Thys
14
AAW
Above Alarm Window.
Increasing Tamb:
0 â Tamb ⤠Ttrip(u)
1 â Tamb > Ttrip(u)
Decreasing Tamb:
0 â Tamb ⤠Ttrip(u) â Thys
1 â Tamb > Ttrip(u) â Thys
13
BAW
Below Alarm Window.
Increasing Tamb:
0 â Tamb ⥠Ttrip(l)
1 â Tamb < Ttrip(l)
Decreasing Tamb:
0 â Tamb ⥠Ttrip(l) â Thys
1 â Tamb < Ttrip(l) â Thys
12
SIGN
Sign bit.
0 â positive temperature value
1 â negative temperature value
11:1
TEMP
Temperature Value (2âs complement). (LSB = 0.125 °C)
0
RFU
reserved; always 0
8
0
R
0
RFU
0
R
SE98A_2
Product data sheet
Rev. 02 â 6 August 2009
© NXP B.V. 2009. All rights reserved.
24 of 43
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